Footwear sole



FIG. 1 is a perspective view of a bottom surface of a footwear sole;

FIG. 2 is a side perspective view of a top surface thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a right view thereof; and,

FIG. 8 is a left view thereof.

The broken line showings in the figures are for the purpose of illustrating environment and/or boundaries only and form no part of the claimed design. 

CLAIM The ornamental design for a footwear sole, as shown and described. 